FamilyIQ: Family Intelligence
In MPsychoR: Modern Psychometrics with R

Description Usage Format Source Examples

Dataset from Hox (2010) containing six intelligence measures. Children are nested within families.

1	data("FamilyIQ")

A data frame with 399 children, nested within 60 families:

family: Family ID.
child: Child ID.
wordlist: Word list intelligence measure.
cards: Cards intelligence measure.
matrices: Matrices intelligence measure.
figures: Figures intelligence measure.
animals: Animals intelligence measure.
occupation: Occupation intelligence measure.

Hox, J. J. (2010). Multilevel analysis: Techniques and applications (2nd ed.). New York: Routledge.

Van Peet, A. A. J. (1992). De potentieeltheorie van intelligentie. [The potentiality theory of intelligence]. Amsterdam: University of Amsterdam, Ph.D. Thesis.

1 2	data("FamilyIQ") str(FamilyIQ)

'data.frame':	399 obs. of  8 variables:
 $ family    : int  1 1 1 1 1 2 2 2 2 2 ...
 $ child     : int  1 2 3 4 5 1 2 3 4 5 ...
 $ wordlist  : int  23 32 24 30 28 29 27 37 29 31 ...
 $ cards     : int  31 27 29 32 28 36 31 37 30 30 ...
 $ matrices  : int  24 25 24 27 23 31 26 35 24 30 ...
 $ figures   : int  32 29 33 29 27 35 25 38 24 31 ...
 $ animals   : int  31 31 36 37 36 34 30 35 31 37 ...
 $ occupation: int  29 29 35 33 28 32 31 36 33 35 ...